[mirror_frr.git] / bfdd / bfdd.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * BFD daemon code
 * Copyright (C) 2018 Network Device Education Foundation, Inc. ("NetDEF")
 */

#include <zebra.h>

#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/un.h>

#include <err.h>

#include "filter.h"
#include "if.h"
#include "vrf.h"

#include "bfd.h"
#include "bfdd_nb.h"
#include "bfddp_packet.h"
#include "lib/version.h"
#include "lib/command.h"


/*
 * FRR related code.
 */
DEFINE_MGROUP(BFDD, "Bidirectional Forwarding Detection Daemon");
DEFINE_MTYPE(BFDD, BFDD_CONTROL, "long-lived control socket memory");
DEFINE_MTYPE(BFDD, BFDD_NOTIFICATION, "short-lived control notification data");

/* Master of threads. */
struct thread_master *master;

/* BFDd privileges */
static zebra_capabilities_t _caps_p[] = {ZCAP_BIND, ZCAP_SYS_ADMIN, ZCAP_NET_RAW};

/* BFD daemon information. */
static struct frr_daemon_info bfdd_di;

void socket_close(int *s)
{
	if (*s <= 0)
		return;

	if (close(*s) != 0)
		zlog_err("%s: close(%d): (%d) %s", __func__, *s, errno,
			 strerror(errno));

	*s = -1;
}

static void sigusr1_handler(void)
{
	zlog_rotate();
}

static void sigterm_handler(void)
{
	bglobal.bg_shutdown = true;

	/* Signalize shutdown. */
	frr_early_fini();

	/* Stop receiving message from zebra. */
	bfdd_zclient_stop();

	/* Shutdown controller to avoid receiving anymore commands. */
	control_shutdown();

	/* Shutdown and free all protocol related memory. */
	bfd_shutdown();

	bfd_vrf_terminate();

	/* Terminate and free() FRR related memory. */
	frr_fini();

	exit(0);
}

static void sighup_handler(void)
{
	zlog_info("SIGHUP received");

	/* Reload config file. */
	vty_read_config(NULL, bfdd_di.config_file, config_default);
}

static struct frr_signal_t bfd_signals[] = {
	{
		.signal = SIGUSR1,
		.handler = &sigusr1_handler,
	},
	{
		.signal = SIGTERM,
		.handler = &sigterm_handler,
	},
	{
		.signal = SIGINT,
		.handler = &sigterm_handler,
	},
	{
		.signal = SIGHUP,
		.handler = &sighup_handler,
	},
};

static const struct frr_yang_module_info *const bfdd_yang_modules[] = {
	&frr_filter_info,
	&frr_interface_info,
	&frr_bfdd_info,
	&frr_vrf_info,
};

FRR_DAEMON_INFO(bfdd, BFD, .vty_port = 2617,
		.proghelp = "Implementation of the BFD protocol.",
		.signals = bfd_signals, .n_signals = array_size(bfd_signals),
		.privs = &bglobal.bfdd_privs,
		.yang_modules = bfdd_yang_modules,
		.n_yang_modules = array_size(bfdd_yang_modules),
);

#define OPTION_CTLSOCK 1001
#define OPTION_DPLANEADDR 2000
static const struct option longopts[] = {
	{"bfdctl", required_argument, NULL, OPTION_CTLSOCK},
	{"dplaneaddr", required_argument, NULL, OPTION_DPLANEADDR},
	{0}
};


/*
 * BFD daemon related code.
 */
struct bfd_global bglobal;

const struct bfd_diag_str_list diag_list[] = {
	{.str = "control-expired", .type = BD_CONTROL_EXPIRED},
	{.str = "echo-failed", .type = BD_ECHO_FAILED},
	{.str = "neighbor-down", .type = BD_NEIGHBOR_DOWN},
	{.str = "forwarding-reset", .type = BD_FORWARDING_RESET},
	{.str = "path-down", .type = BD_PATH_DOWN},
	{.str = "concatenated-path-down", .type = BD_CONCATPATH_DOWN},
	{.str = "administratively-down", .type = BD_ADMIN_DOWN},
	{.str = "reverse-concat-path-down", .type = BD_REVCONCATPATH_DOWN},
	{.str = NULL},
};

const struct bfd_state_str_list state_list[] = {
	{.str = "admin-down", .type = PTM_BFD_ADM_DOWN},
	{.str = "down", .type = PTM_BFD_DOWN},
	{.str = "init", .type = PTM_BFD_INIT},
	{.str = "up", .type = PTM_BFD_UP},
	{.str = NULL},
};

static uint16_t
parse_port(const char *str)
{
	char *nulbyte;
	long rv;

	errno = 0;
	rv = strtol(str, &nulbyte, 10);
	/* No conversion performed. */
	if (rv == 0 && errno == EINVAL) {
		fprintf(stderr, "invalid BFD data plane address port: %s\n",
			str);
		exit(0);
	}
	/* Invalid number range. */
	if ((rv <= 0 || rv >= 65535) || errno == ERANGE) {
		fprintf(stderr, "invalid BFD data plane port range: %s\n",
			str);
		exit(0);
	}
	/* There was garbage at the end of the string. */
	if (*nulbyte != 0) {
		fprintf(stderr, "invalid BFD data plane port: %s\n",
			str);
		exit(0);
	}

	return (uint16_t)rv;
}

static void
distributed_bfd_init(const char *arg)
{
	char *sptr, *saux;
	bool is_client = false;
	size_t slen;
	socklen_t salen;
	char addr[64];
	char type[64];
	union {
		struct sockaddr_in sin;
		struct sockaddr_in6 sin6;
		struct sockaddr_un sun;
	} sa;

	/* Basic parsing: find ':' to figure out type part and address part. */
	sptr = strchr(arg, ':');
	if (sptr == NULL) {
		fprintf(stderr, "invalid BFD data plane socket: %s\n", arg);
		exit(1);
	}

	/* Calculate type string length. */
	slen = (size_t)(sptr - arg);

	/* Copy the address part. */
	sptr++;
	strlcpy(addr, sptr, sizeof(addr));

	/* Copy type part. */
	strlcpy(type, arg, slen + 1);

	/* Reset address data. */
	memset(&sa, 0, sizeof(sa));

	/* Fill the address information. */
	if (strcmp(type, "unix") == 0 || strcmp(type, "unixc") == 0) {
		if (strcmp(type, "unixc") == 0)
			is_client = true;

		salen = sizeof(sa.sun);
		sa.sun.sun_family = AF_UNIX;
		strlcpy(sa.sun.sun_path, addr, sizeof(sa.sun.sun_path));
	} else if (strcmp(type, "ipv4") == 0 || strcmp(type, "ipv4c") == 0) {
		if (strcmp(type, "ipv4c") == 0)
			is_client = true;

		salen = sizeof(sa.sin);
		sa.sin.sin_family = AF_INET;

		/* Parse port if any. */
		sptr = strchr(addr, ':');
		if (sptr == NULL) {
			sa.sin.sin_port = htons(BFD_DATA_PLANE_DEFAULT_PORT);
		} else {
			*sptr = 0;
			sa.sin.sin_port = htons(parse_port(sptr + 1));
		}

		if (inet_pton(AF_INET, addr, &sa.sin.sin_addr) != 1)
			errx(1, "%s: inet_pton: invalid address %s", __func__,
			     addr);
	} else if (strcmp(type, "ipv6") == 0 || strcmp(type, "ipv6c") == 0) {
		if (strcmp(type, "ipv6c") == 0)
			is_client = true;

		salen = sizeof(sa.sin6);
		sa.sin6.sin6_family = AF_INET6;

		/* Check for IPv6 enclosures '[]' */
		sptr = &addr[0];
		if (*sptr != '[')
			errx(1, "%s: invalid IPv6 address format: %s", __func__,
			     addr);

		saux = strrchr(addr, ']');
		if (saux == NULL)
			errx(1, "%s: invalid IPv6 address format: %s", __func__,
			     addr);

		/* Consume the '[]:' part. */
		slen = saux - sptr;
		memmove(addr, addr + 1, slen);
		addr[slen - 1] = 0;

		/* Parse port if any. */
		saux++;
		sptr = strrchr(saux, ':');
		if (sptr == NULL) {
			sa.sin6.sin6_port = htons(BFD_DATA_PLANE_DEFAULT_PORT);
		} else {
			*sptr = 0;
			sa.sin6.sin6_port = htons(parse_port(sptr + 1));
		}

		if (inet_pton(AF_INET6, addr, &sa.sin6.sin6_addr) != 1)
			errx(1, "%s: inet_pton: invalid address %s", __func__,
			     addr);
	} else {
		fprintf(stderr, "invalid BFD data plane socket type: %s\n",
			type);
		exit(1);
	}

	/* Initialize BFD data plane listening socket. */
	bfd_dplane_init((struct sockaddr *)&sa, salen, is_client);
}

static void bg_init(void)
{
	struct zebra_privs_t bfdd_privs = {
#if defined(FRR_USER) && defined(FRR_GROUP)
		.user = FRR_USER,
		.group = FRR_GROUP,
#endif
#if defined(VTY_GROUP)
		.vty_group = VTY_GROUP,
#endif
		.caps_p = _caps_p,
		.cap_num_p = array_size(_caps_p),
		.cap_num_i = 0,
	};

	TAILQ_INIT(&bglobal.bg_bcslist);
	TAILQ_INIT(&bglobal.bg_obslist);

	memcpy(&bglobal.bfdd_privs, &bfdd_privs,
	       sizeof(bfdd_privs));
}

int main(int argc, char *argv[])
{
	char ctl_path[512], dplane_addr[512];
	bool ctlsockused = false;
	int opt;

	bglobal.bg_use_dplane = false;

	/* Initialize system sockets. */
	bg_init();

	frr_preinit(&bfdd_di, argc, argv);
	frr_opt_add("", longopts,
		    "      --bfdctl       Specify bfdd control socket\n"
		    "      --dplaneaddr   Specify BFD data plane address\n");

	snprintf(ctl_path, sizeof(ctl_path), BFDD_CONTROL_SOCKET,
		 "", "");
	while (true) {
		opt = frr_getopt(argc, argv, NULL);
		if (opt == EOF)
			break;

		switch (opt) {
		case OPTION_CTLSOCK:
			strlcpy(ctl_path, optarg, sizeof(ctl_path));
			ctlsockused = true;
			break;
		case OPTION_DPLANEADDR:
			strlcpy(dplane_addr, optarg, sizeof(dplane_addr));
			bglobal.bg_use_dplane = true;
			break;

		default:
			frr_help_exit(1);
		}
	}

	if (bfdd_di.pathspace && !ctlsockused)
		snprintf(ctl_path, sizeof(ctl_path), BFDD_CONTROL_SOCKET,
			 "/", bfdd_di.pathspace);

	/* Initialize FRR infrastructure. */
	master = frr_init();

	/* Initialize control socket. */
	control_init(ctl_path);

	/* Initialize BFD data structures. */
	bfd_initialize();

	bfd_vrf_init();

	access_list_init();

	/* Initialize zebra connection. */
	bfdd_zclient_init(&bglobal.bfdd_privs);

	thread_add_read(master, control_accept, NULL, bglobal.bg_csock,
			&bglobal.bg_csockev);

	/* Install commands. */
	bfdd_vty_init();

	/* read configuration file and daemonize  */
	frr_config_fork();

	/* Initialize BFD data plane listening socket. */
	if (bglobal.bg_use_dplane)
		distributed_bfd_init(dplane_addr);

	frr_run(master);
	/* NOTREACHED */

	return 0;
}
Commit	Line	Data
acddc0ed	1	// SPDX-License-Identifier: GPL-2.0-or-later
e9e2c950 RZ	2	/*
	3	* BFD daemon code
	4	* Copyright (C) 2018 Network Device Education Foundation, Inc. ("NetDEF")
e9e2c950 RZ	5	*/
	6
	7	#include <zebra.h>
	8
230aefe2 RZ	9	#include <arpa/inet.h>
	10	#include <netinet/in.h>
	11	#include <sys/socket.h>
	12	#include <sys/un.h>
	13
	14	#include <err.h>
	15
9f95a33a	16	#include "filter.h"
463d46a3 IR	17	#include "if.h"
463d46a3 IR	18	#include "vrf.h"
9f95a33a	19
e9e2c950	20	#include "bfd.h"
6c574029	21	#include "bfdd_nb.h"
230aefe2	22	#include "bfddp_packet.h"
e9e2c950	23	#include "lib/version.h"
0bdeb5e5	24	#include "lib/command.h"
6ed84949	25
e9e2c950 RZ	26
	27	/*
	28	* FRR related code.
	29	*/
bf8d3d6a DL	30	DEFINE_MGROUP(BFDD, "Bidirectional Forwarding Detection Daemon");
	31	DEFINE_MTYPE(BFDD, BFDD_CONTROL, "long-lived control socket memory");
	32	DEFINE_MTYPE(BFDD, BFDD_NOTIFICATION, "short-lived control notification data");
e9e2c950 RZ	33
	34	/* Master of threads. */
	35	struct thread_master *master;
	36
	37	/* BFDd privileges */
4e6b48d3	38	static zebra_capabilities_t _caps_p[] = {ZCAP_BIND, ZCAP_SYS_ADMIN, ZCAP_NET_RAW};
e9e2c950	39
49cc9e7b RZ	40	/* BFD daemon information. */
	41	static struct frr_daemon_info bfdd_di;
	42
e9e2c950 RZ	43	void socket_close(int *s)
	44	{
	45	if (*s <= 0)
	46	return;
	47
	48	if (close(*s) != 0)
259b64eb RZ	49	zlog_err("%s: close(%d): (%d) %s", __func__, *s, errno,
259b64eb RZ	50	strerror(errno));
e9e2c950 RZ	51
	52	*s = -1;
	53	}
	54
	55	static void sigusr1_handler(void)
	56	{
	57	zlog_rotate();
	58	}
	59
	60	static void sigterm_handler(void)
	61	{
f3e1d224 RZ	62	bglobal.bg_shutdown = true;
f3e1d224 RZ	63
e9e2c950 RZ	64	/* Signalize shutdown. */
	65	frr_early_fini();
	66
d3af6147 RZ	67	/* Stop receiving message from zebra. */
	68	bfdd_zclient_stop();
	69
e9e2c950 RZ	70	/* Shutdown controller to avoid receiving anymore commands. */
	71	control_shutdown();
	72
	73	/* Shutdown and free all protocol related memory. */
	74	bfd_shutdown();
	75
7bcadbae	76	bfd_vrf_terminate();
e9e2c950 RZ	77
	78	/* Terminate and free() FRR related memory. */
	79	frr_fini();
	80
	81	exit(0);
	82	}
	83
49cc9e7b RZ	84	static void sighup_handler(void)
	85	{
	86	zlog_info("SIGHUP received");
	87
	88	/* Reload config file. */
	89	vty_read_config(NULL, bfdd_di.config_file, config_default);
	90	}
	91
7cc91e67	92	static struct frr_signal_t bfd_signals[] = {
e9e2c950 RZ	93	{
	94	.signal = SIGUSR1,
	95	.handler = &sigusr1_handler,
	96	},
	97	{
	98	.signal = SIGTERM,
	99	.handler = &sigterm_handler,
	100	},
	101	{
	102	.signal = SIGINT,
	103	.handler = &sigterm_handler,
	104	},
49cc9e7b RZ	105	{
	106	.signal = SIGHUP,
	107	.handler = &sighup_handler,
	108	},
e9e2c950 RZ	109	};
e9e2c950 RZ	110
0d8c7a26	111	static const struct frr_yang_module_info *const bfdd_yang_modules[] = {
c2aab693	112	&frr_filter_info,
adc26455 RZ	113	&frr_interface_info,
adc26455 RZ	114	&frr_bfdd_info,
6fd8972a	115	&frr_vrf_info,
adc26455 RZ	116	};
adc26455 RZ	117
e9e2c950 RZ	118	FRR_DAEMON_INFO(bfdd, BFD, .vty_port = 2617,
	119	.proghelp = "Implementation of the BFD protocol.",
	120	.signals = bfd_signals, .n_signals = array_size(bfd_signals),
adc26455 RZ	121	.privs = &bglobal.bfdd_privs,
adc26455 RZ	122	.yang_modules = bfdd_yang_modules,
80413c20 DL	123	.n_yang_modules = array_size(bfdd_yang_modules),
80413c20 DL	124	);
e9e2c950 RZ	125
e9e2c950 RZ	126	#define OPTION_CTLSOCK 1001
230aefe2	127	#define OPTION_DPLANEADDR 2000
2b64873d	128	static const struct option longopts[] = {
e9e2c950	129	{"bfdctl", required_argument, NULL, OPTION_CTLSOCK},
230aefe2	130	{"dplaneaddr", required_argument, NULL, OPTION_DPLANEADDR},
e9e2c950 RZ	131	{0}
	132	};
	133
	134
	135	/*
	136	* BFD daemon related code.
	137	*/
	138	struct bfd_global bglobal;
	139
2b64873d	140	const struct bfd_diag_str_list diag_list[] = {
40675ea9 RZ	141	{.str = "control-expired", .type = BD_CONTROL_EXPIRED},
	142	{.str = "echo-failed", .type = BD_ECHO_FAILED},
	143	{.str = "neighbor-down", .type = BD_NEIGHBOR_DOWN},
	144	{.str = "forwarding-reset", .type = BD_FORWARDING_RESET},
	145	{.str = "path-down", .type = BD_PATH_DOWN},
	146	{.str = "concatenated-path-down", .type = BD_CONCATPATH_DOWN},
	147	{.str = "administratively-down", .type = BD_ADMIN_DOWN},
	148	{.str = "reverse-concat-path-down", .type = BD_REVCONCATPATH_DOWN},
e9e2c950 RZ	149	{.str = NULL},
	150	};
	151
2b64873d	152	const struct bfd_state_str_list state_list[] = {
40675ea9 RZ	153	{.str = "admin-down", .type = PTM_BFD_ADM_DOWN},
	154	{.str = "down", .type = PTM_BFD_DOWN},
	155	{.str = "init", .type = PTM_BFD_INIT},
	156	{.str = "up", .type = PTM_BFD_UP},
e9e2c950 RZ	157	{.str = NULL},
	158	};
	159
230aefe2 RZ	160	static uint16_t
	161	parse_port(const char *str)
	162	{
	163	char *nulbyte;
	164	long rv;
	165
	166	errno = 0;
	167	rv = strtol(str, &nulbyte, 10);
	168	/* No conversion performed. */
	169	if (rv == 0 && errno == EINVAL) {
	170	fprintf(stderr, "invalid BFD data plane address port: %s\n",
	171	str);
	172	exit(0);
	173	}
	174	/* Invalid number range. */
	175	if ((rv <= 0 \|\| rv >= 65535) \|\| errno == ERANGE) {
	176	fprintf(stderr, "invalid BFD data plane port range: %s\n",
	177	str);
	178	exit(0);
	179	}
	180	/* There was garbage at the end of the string. */
	181	if (*nulbyte != 0) {
	182	fprintf(stderr, "invalid BFD data plane port: %s\n",
	183	str);
	184	exit(0);
	185	}
	186
	187	return (uint16_t)rv;
	188	}
	189
	190	static void
	191	distributed_bfd_init(const char *arg)
	192	{
	193	char sptr, saux;
6655b43d	194	bool is_client = false;
230aefe2 RZ	195	size_t slen;
	196	socklen_t salen;
	197	char addr[64];
	198	char type[64];
	199	union {
	200	struct sockaddr_in sin;
	201	struct sockaddr_in6 sin6;
	202	struct sockaddr_un sun;
	203	} sa;
	204
	205	/* Basic parsing: find ':' to figure out type part and address part. */
	206	sptr = strchr(arg, ':');
	207	if (sptr == NULL) {
	208	fprintf(stderr, "invalid BFD data plane socket: %s\n", arg);
	209	exit(1);
	210	}
	211
	212	/* Calculate type string length. */
	213	slen = (size_t)(sptr - arg);
	214
	215	/* Copy the address part. */
	216	sptr++;
	217	strlcpy(addr, sptr, sizeof(addr));
	218
	219	/* Copy type part. */
	220	strlcpy(type, arg, slen + 1);
	221
	222	/* Reset address data. */
	223	memset(&sa, 0, sizeof(sa));
	224
	225	/* Fill the address information. */
6655b43d RZ	226	if (strcmp(type, "unix") == 0 \|\| strcmp(type, "unixc") == 0) {
	227	if (strcmp(type, "unixc") == 0)
	228	is_client = true;
	229
230aefe2 RZ	230	salen = sizeof(sa.sun);
	231	sa.sun.sun_family = AF_UNIX;
	232	strlcpy(sa.sun.sun_path, addr, sizeof(sa.sun.sun_path));
6655b43d RZ	233	} else if (strcmp(type, "ipv4") == 0 \|\| strcmp(type, "ipv4c") == 0) {
	234	if (strcmp(type, "ipv4c") == 0)
	235	is_client = true;
	236
230aefe2 RZ	237	salen = sizeof(sa.sin);
	238	sa.sin.sin_family = AF_INET;
	239
	240	/* Parse port if any. */
	241	sptr = strchr(addr, ':');
	242	if (sptr == NULL) {
	243	sa.sin.sin_port = htons(BFD_DATA_PLANE_DEFAULT_PORT);
	244	} else {
	245	*sptr = 0;
	246	sa.sin.sin_port = htons(parse_port(sptr + 1));
	247	}
	248
	249	if (inet_pton(AF_INET, addr, &sa.sin.sin_addr) != 1)
	250	errx(1, "%s: inet_pton: invalid address %s", __func__,
	251	addr);
6655b43d RZ	252	} else if (strcmp(type, "ipv6") == 0 \|\| strcmp(type, "ipv6c") == 0) {
	253	if (strcmp(type, "ipv6c") == 0)
	254	is_client = true;
	255
230aefe2 RZ	256	salen = sizeof(sa.sin6);
	257	sa.sin6.sin6_family = AF_INET6;
	258
	259	/* Check for IPv6 enclosures '[]' */
	260	sptr = &addr[0];
	261	if (*sptr != '[')
	262	errx(1, "%s: invalid IPv6 address format: %s", __func__,
	263	addr);
	264
	265	saux = strrchr(addr, ']');
	266	if (saux == NULL)
	267	errx(1, "%s: invalid IPv6 address format: %s", __func__,
	268	addr);
	269
	270	/* Consume the '[]:' part. */
	271	slen = saux - sptr;
	272	memmove(addr, addr + 1, slen);
	273	addr[slen - 1] = 0;
	274
	275	/* Parse port if any. */
	276	saux++;
	277	sptr = strrchr(saux, ':');
	278	if (sptr == NULL) {
	279	sa.sin6.sin6_port = htons(BFD_DATA_PLANE_DEFAULT_PORT);
	280	} else {
	281	*sptr = 0;
	282	sa.sin6.sin6_port = htons(parse_port(sptr + 1));
	283	}
	284
	285	if (inet_pton(AF_INET6, addr, &sa.sin6.sin6_addr) != 1)
	286	errx(1, "%s: inet_pton: invalid address %s", __func__,
	287	addr);
	288	} else {
	289	fprintf(stderr, "invalid BFD data plane socket type: %s\n",
	290	type);
	291	exit(1);
	292	}
	293
	294	/* Initialize BFD data plane listening socket. */
6655b43d	295	bfd_dplane_init((struct sockaddr *)&sa, salen, is_client);
230aefe2	296	}
e9e2c950 RZ	297
	298	static void bg_init(void)
	299	{
f21536d2 PG	300	struct zebra_privs_t bfdd_privs = {
	301	#if defined(FRR_USER) && defined(FRR_GROUP)
	302	.user = FRR_USER,
	303	.group = FRR_GROUP,
	304	#endif
	305	#if defined(VTY_GROUP)
	306	.vty_group = VTY_GROUP,
	307	#endif
	308	.caps_p = _caps_p,
	309	.cap_num_p = array_size(_caps_p),
	310	.cap_num_i = 0,
	311	};
	312
e9e2c950	313	TAILQ_INIT(&bglobal.bg_bcslist);
d245e522	314	TAILQ_INIT(&bglobal.bg_obslist);
f21536d2 PG	315
	316	memcpy(&bglobal.bfdd_privs, &bfdd_privs,
	317	sizeof(bfdd_privs));
e9e2c950 RZ	318	}
	319
	320	int main(int argc, char *argv[])
	321	{
230aefe2	322	char ctl_path[512], dplane_addr[512];
89277ebf	323	bool ctlsockused = false;
e9e2c950 RZ	324	int opt;
e9e2c950 RZ	325
e51c0f77 DS	326	bglobal.bg_use_dplane = false;
e51c0f77 DS	327
f21536d2 PG	328	/* Initialize system sockets. */
	329	bg_init();
	330
e9e2c950 RZ	331	frr_preinit(&bfdd_di, argc, argv);
e9e2c950 RZ	332	frr_opt_add("", longopts,
230aefe2 RZ	333	" --bfdctl Specify bfdd control socket\n"
230aefe2 RZ	334	" --dplaneaddr Specify BFD data plane address\n");
e9e2c950	335
89277ebf DS	336	snprintf(ctl_path, sizeof(ctl_path), BFDD_CONTROL_SOCKET,
89277ebf DS	337	"", "");
e9e2c950 RZ	338	while (true) {
	339	opt = frr_getopt(argc, argv, NULL);
	340	if (opt == EOF)
	341	break;
	342
	343	switch (opt) {
	344	case OPTION_CTLSOCK:
89277ebf DS	345	strlcpy(ctl_path, optarg, sizeof(ctl_path));
89277ebf DS	346	ctlsockused = true;
e9e2c950	347	break;
230aefe2 RZ	348	case OPTION_DPLANEADDR:
	349	strlcpy(dplane_addr, optarg, sizeof(dplane_addr));
	350	bglobal.bg_use_dplane = true;
	351	break;
e9e2c950 RZ	352
	353	default:
	354	frr_help_exit(1);
e9e2c950 RZ	355	}
	356	}
	357
89277ebf DS	358	if (bfdd_di.pathspace && !ctlsockused)
	359	snprintf(ctl_path, sizeof(ctl_path), BFDD_CONTROL_SOCKET,
	360	"/", bfdd_di.pathspace);
	361
d85b048d DL	362	/* Initialize FRR infrastructure. */
d85b048d DL	363	master = frr_init();
e9e2c950	364
e9e2c950 RZ	365	/* Initialize control socket. */
	366	control_init(ctl_path);
	367
e9e2c950 RZ	368	/* Initialize BFD data structures. */
	369	bfd_initialize();
	370
9fc0bc5c PG	371	bfd_vrf_init();
9fc0bc5c PG	372
9f95a33a DS	373	access_list_init();
9f95a33a DS	374
d3af6147	375	/* Initialize zebra connection. */
f21536d2	376	bfdd_zclient_init(&bglobal.bfdd_privs);
d3af6147	377
e9e2c950 RZ	378	thread_add_read(master, control_accept, NULL, bglobal.bg_csock,
	379	&bglobal.bg_csockev);
	380
c2f29cf3 RZ	381	/* Install commands. */
	382	bfdd_vty_init();
	383
e9e2c950 RZ	384	/* read configuration file and daemonize */
	385	frr_config_fork();
	386
230aefe2 RZ	387	/* Initialize BFD data plane listening socket. */
	388	if (bglobal.bg_use_dplane)
	389	distributed_bfd_init(dplane_addr);
	390
e9e2c950 RZ	391	frr_run(master);
	392	/* NOTREACHED */
	393
	394	return 0;
	395	}